title: Reducing temperature dependence of the output energy of a quasi-continuous wave diode-pumped Nd:YAG laser.
abstract: It is demonstrated by numerical modeling that spectrally dispersed compound pumping diodes and low-loss pumping chamber reduced the temperature dependence of the output energy of quasi-continuous wave diode-pumped Nd:YAG lasers considerably. Several compound diodes with different spectral profiles were tested for pumping. The laser energy was calculated as a function of diode temperature from -30°C to 60°C. When a compound diode with a flat-top spectrum was used for pumping, the mean laser energy was 83% of the maximum energy of a Nd:YAG laser pumped by a diode with a narrow bandwidth. In addition, a compound diode with three emission lines was tested for pumping. When the wavelength gap between the adjacent emission lines of the pumping diode was in the range of 3-10 nm, the mean energy of the Nd:YAG laser became similar to that of a Nd:YAG laser pumped by a diode with a flat-top spectrum.
authors.forename: Kangin
authors.initials: K
authors.lastname: Lee
authors.forename: Youngjung
authors.initials: Y
authors.lastname: Kim
authors.forename: Sijin
authors.initials: S
authors.lastname: Lee
authors.forename: Jin Hyuk
authors.initials: JH
authors.lastname: Kwon
authors.forename: Jin Seog
authors.initials: JS
authors.lastname: Gwak
authors.forename: Jonghoon
authors.initials: J
authors.lastname: Yi